Name: Episode 4 — Deep Cycle Batteries, Tins, Optical Lenses
Released: 2007-01-23
Duration: 21 min
Rating: 10

How It’s Made (2001 – 2019)

2001 • 32 seasons • Documentary • TV-G

On August 7, 2026

#1199

1199th most popular TV show online

48 Popularity Score

Streaming on See all

Episode 4 — Deep Cycle Batteries, Tins, Optical Lenses

Released: 2007-01-23 • Documentary

100%

User score

This episode demonstrates the production processes for deep-cycle batteries, tins and optical lenses, and shows how each is made.

Episode 4 — Deep Cycle Batteries, Tins, Optical Lenses